/**
 * Copyright (C) 2015 The Gravitee team (http://gravitee.io)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.gravitee.gateway.policy.impl;

import io.gravitee.policy.api.PolicyContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author David BRASSELY (david at graviteesource.com)
 * @author Jeoffrey HAEYAERT (jeoffrey.haeyaert at graviteesource.com)
 * @author GraviteeSource Team
 */
public class PolicyContextFactory {

    private static final Logger LOGGER = LoggerFactory.getLogger(PolicyContextFactory.class);

    public PolicyContext create(Class<? extends PolicyContext> policyContextClass) throws Exception {
        if (policyContextClass == null) {
            return null;
        }

        try {
            LOGGER.debug("Creating a new instance of policy context of type {}", policyContextClass.getName());
            return policyContextClass.newInstance();
        } catch (Exception ex) {
            LOGGER.error("Unable to create a policy context", ex);
            throw ex;
        }
    }
}